Wellink Corporation W202ER-4 Manual Do Utilizador
VisionNet 202ER-4 ADSL Ethernet Router User’s Guid
73
You can create a basic rule for each specific address
translation to occur. The range of addresses should correspond
to private addresses already in use on your network, whether
assigned statically to your PCs, or assigned dynamically using
DHCP.
translation to occur. The range of addresses should correspond
to private addresses already in use on your network, whether
assigned statically to your PCs, or assigned dynamically using
DHCP.
5. In the Global Address From and Global Address To fields,
type the starting and ending address that identify the pool of
public IP addresses to which to translate your private
addresses. Or, type the same address in both fields (if you
also specified a single address in step 4).
public IP addresses to which to translate your private
addresses. Or, type the same address in both fields (if you
also specified a single address in step 4).
6. Follow steps 7-12 under "The napt rule" on page 67 to
submit your changes.
The filter rule: Configuring a basic rule with additional criteria
Like the basic flavor, the filter flavor translates public and private IP
addresses on a one-to-one basis. The filter flavor extends the
capability of the basic rule. Refer to “The basic Rule” on page 72 for
a general description.
addresses on a one-to-one basis. The filter flavor extends the
capability of the basic rule. Refer to “The basic Rule” on page 72 for
a general description.
You can use the filter rule if you want an address translation to
occur only when your LAN computers initiate access to specific
destinations. The destinations can be identified by their IP
addresses, server type (such as FTP or Web server), or both.
occur only when your LAN computers initiate access to specific
destinations. The destinations can be identified by their IP
addresses, server type (such as FTP or Web server), or both.
Figure 29 shows the fields used to establish a filter rule.
Figure 29. NAT Rule
Add Page (filter Flavor)
Follow these instructions to add a filter rule (see steps 1-4 under
"The napt rule" on page 67 for specific instructions corresponding to
steps 1 and 2 below):
"The napt rule" on page 67 for specific instructions corresponding to
steps 1 and 2 below):